This document discusses human body axes and planes. It defines axes as lines that movements occur around and planes as surfaces where movements take place. The three main axes are the sagittal, frontal, and vertical axes, which pass through joints and define the sagittal, frontal, and horizontal planes. Common human movements like abduction are described with reference to these axes and planes. The effect of gravity on movement in the different planes is also explained, such as how the horizontal plane allows gravity-free movement while upward movement in the vertical plane requires overcoming gravity.
2. Axes
this is the line about which movements takes
place
Human movements are described in relation to
axis and planes.
3. Planes
This is the surface in which movements takes
place.
Axis and planes are right angle [90 degree] to
each other .
In human body ,movements occurs at joints so
axis passes through joints.
5. Sagittal axis
Lies Parallel to
Sagittal suture in
skull in human body
i.e. antero posterior
direction
Movements about
this axis is in a
frontal plane .
7. Frontal axis
Lies parallel to the
transverse suture of
skull.
movement occurs in
Sagittal plane.
8. Vertical axis
This axis lies parallel
to line of gravity.
Movements occurs in
horizontal plane.
9. human movements in relation to axis & planes
abduction/adduction at shoulder joint
flexion /extension at hip joint
Rotation movement at neck
11. It is conventional and convenient to indicate
the type and direction of movements of the
body with reference to these axes and planes.
In many instances there is more than one axis
and therefore more than one plan about that
axis.
13. Horizontal plane
Movements in this plane are not affected by
gravity. gravity free
weak muscle which are unable to produce
movement against gravity can produce
movement in this plane.
14. Inclined plane
2 movements upward or
downward
During upward movement
,resistance depends on force
of gravity and reduce by the
reaction of plane
So resistance is least when
incline is nearly horizontal
& increases as it approach to
vertical.
downward movement is
produced by force of
gravity..magnitude of force
increases as inclination
approaches the vertical.
15. Vertical plane
Upward movements
Muscular force >
force of gravity
Downward movements
Gravity force is
modified at specific
speed by muscular
action